Hundreds of thousands of garment workers once toiled in the sweaty, elbow-to-elbow workshops of midtown Manhattan before the whirring of sewing machines was mostly silenced by foreign competition. But the city's garment district isn't dead yet.

Blue diamonds -- like the Smithsonian's famous Hope diamond -- are the rarest of all and how they formed more than a billion years ago is a bit of a mystery. Now scientists think they have a glimmer of an answer.

What filmmakers Peter Ettedgui & Ian Bonhôte learned while making their documentary about the late fashion designer Alexander McQueen is that he was an enigmatic figure. EDGE spoke to the pair about the controversial director & their new film.